U

U2F = Universal 2nd Factor
- Obsoleted by CTAP and WebAuthn
- Supported by Google Titan security keys
ULA = (IPV6) Unique Local Address
- An IPv6 counterpart to RFC 1918 private address space, defined in RFC 4193, but internally routable.
- Compare GUA.
- Dual-homed VMs can have an ULA and a GUA.
- Google's ULA prefix is fd20::/20; GCP ULAs are /48 in that range.
URL map:
- a GCP configuration resource used to route requests to backend services or backend buckets.
- For example, with an external HTTP(S) load balancer, you can use a single URL map to route requests to different destinations based on the rules configured in the URL map